Nie Dexin
Electric Power Research Institute
7 Papers
8 Citations
Nie Dexin is an academic researcher from Electric Power Research Institute. The author has contributed to research in topics: Transformer & Electric power system. The author has an hindex of 2, co-authored 7 publications.
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Papers
Validity Evaluation Method of DGA Monitoring Sensor in Power Transformer Based on Chaos Theory
Zhengqin Zhou,Li Xiao,Nie Dexin,Bo Qi,Peng Zhang,Chunjia Gao,Chengrong Li +6 more
- 01 Oct 2018
TL;DR: Verification test over a real case in the field shows that the validity assess method proposed is able to accurately evaluate the validity of DGA monitoring devices, whose detection rate of the failure monitoring device is up to 100%.
3
State Prediction Method of Power Transformer Based on Grey Differential Threshold
Zhenxin Feng,Jiang Yi,Nie Dexin,Yiming Wang,Bo Qi,Peng Zhang,Chunjia Ga,Chengrong Lf +7 more
- 01 Oct 2018
TL;DR: A method for predicting the state of equipment by predicting transformer differential thresholds to determine equipment operating trends that overcomes the problem of prediction accuracy caused by sudden changes in the external environment, and has more practical application value than existing state prediction methods.
2
Patent
Method and system for identification of signal type of cable partial discharge signals
Zhou Wei,Nie Dexin,Zhang Jun,Jiang Yi,Wang Siqi,Feng Zhenxin,Wang Quan,Ding Guocheng,Fu Jiliang,Chen Qingtao,Lu Bing,Yang Haitao,Chen Xiwen,Wu Xingwang,Wang Xu,Yin Ruihan,Nie Gaoning,Liu Fangming +17 more
- 25 Dec 2018
TL;DR: In this article, a method and a system for identification of signal type of cable partial discharge signals is presented. But the method is based on a support vector machine (SVM) learning model, which is optimized to obtain optimum parameters by using particle swarm optimization.
2
Patent
Fast indexing method for state detection data
Gu Kaikai,Xu Xiaolu,Zhou Zhengqin,Xu Jinxia,Guo Yanxue,Nie Dexin,Mao Guanghui +6 more
- 17 Nov 2017
TL;DR: In this paper, a fast indexing method for state detection data is proposed, which comprises the following steps of: S1: researching the classification, the feature quantity extraction and normalization expression technology of different types of power equipment state-detection data; S2: constructing a state detector data quality evaluation index and an evaluation model, and researching a state detection state data quality fast dynamic detection method; S3: researching means to improve the quality of state detection dataset from different sources and with different quality.
1
Patent
Portable device used for detecting moisture content in gas and method thereof
Zhou Wei,Zhang Jun,Wang Siqi,Wang Haiyan,Nie Dexin,Cheng Lin,Huang Ying,Lu Bing,Wang Quan,Fu Jiliang,Chen Xiwen,Wang Xu,Guo Zijuan,Qi Cong,Kuang Yi,Liu Fangming,Zhu Chidan,Yu Xueqin,Du Zhenbei,Jiang Yi,Gu Kaikai,Feng Zhenxin,Zhou Zhengqin +22 more
- 09 Nov 2016
TL;DR: In this article, a portable device for detecting moisture content in gas is described, which consists of an air inlet apparatus used for collecting the sampling gas and conveying the collected sampling gas to a portable dew-point instrument.